package coding.unit11;

import java.util.ArrayList;
import java.util.Collection;

/**
 * @author Wang Renlei
 * @Date 2020/5/6
 */
public class Gerbil {

    int gerbilNumber;

    public Gerbil() {
        gerbilNumber = 0;
    }

    void hop() {
        System.out.println(gerbilNumber);
    }

    public static void main(String[] args) {
        Collection<Integer> list = new ArrayList();
    }

}
